The wife of the pilot in a fiery plane crash in Northwest Austin was expected to speak out Friday.

Sheryl Stack, Joseph Stack’s wife, is expected to talk to the media sometime Friday — one day after Joseph Stack flew his small plane into the Echelon building along Highway 183 and 360 in Northwest Austin.

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Investigators remained on the scene Friday morning Police confirmed the act was intentional.

Nearly 200 tax workers were inside the office building Thursday morning when investigators say Stack intentionally crashed his plane into the building — apparently angry over a dispute with the IRS.